School Screening and Telemedicine Specialty Referral to Address Childhood Hearing Loss in Rural Kentucky

School Screening and Telemedicine Specialty Referral to Address Childhood Hearing Loss in Rural Kentucky

This trial will evaluate a multilevel intervention (STAR model) that combines mobile health (mHealth) hearing screening tools with telemedicine technology for specialty care access in rural Kentucky schools. An initial version of the model was used in rural Alaska where telemedicine-based specialty referral improved both proportion of children receiving follow-up and time to follow-up. The refined STAR model will utilize an enhanced mHealth screening protocol that includes tympanometry for the detection of middle ear disease. The STAR model will also include a specialty telemedicine referral process in schools for children who refer school screening.

Childhood hearing loss has substantial lifelong consequences, including speech-language delay, worse academic performance, and limited vocational opportunities. In rural settings, where access to care is limited, school-based preventative screening programs can help in early identification of childhood hearing loss. The state of Kentucky mandates hearing screening for all schools; however, the effectiveness of these programs is unclear. Further, current school programs do not include a middle ear assessment, which is needed to detect infection-related hearing loss common in children in rural and low-income settings. In children referred from school-based hearing screening programs, loss to follow-up also remains a pervasive issue. To address these key issues, the University of Kentucky has partnered with the University of Arkansas Medical Sciences to lead the Appalachian STAR trial. This trial will evaluate a multilevel intervention (STAR model) that combines mobile health (mHealth) hearing screening tools with telemedicine technology for specialty care access in rural Kentucky schools. An initial version of the model was used in rural Alaska where telemedicine-based specialty referral improved both proportion of children receiving follow-up and time to follow-up. The refined STAR model will utilize an enhanced mHealth screening protocol that includes tympanometry for the detection of middle ear disease. The STAR model will also include a specialty telemedicine referral process in schools for children who refer school screening. The Appalachian STAR stepped-wedge cluster randomized trial will be conducted in approximately 64 elementary schools located in 14 counties in rural Kentucky. Approximately 3600 students at school entry will be enrolled annually for 4 years, for a total of approximately 14,400 children. Cluster randomization will occur in two sequences at the county level, with 7 counties (clusters) in each sequence. The 4-year trial will include a control condition period, followed by phased roll-out of the intervention. The enhanced mHealth school hearing screening protocol will be implemented first. The following year, specialty telemedicine referral will be added to the enhanced screening protocol. All 14 counties will receive the STAR model by the end of the trial. An implementation evaluation will be conducted to refine the STAR model throughout the trial. If successful, the STAR model could be applied to address hearing loss and other childhood health conditions that affect underserved rural communities across America.

14 total counties (clusters) are participating in the stepped wedge randomized trial. There are two nested trials within the overall stepped-wedge trial: a complete design to evaluate the enhanced mHealth screening component and an incomplete design to evaluate the specialty telemedicine referral component combined with enhanced screening. Clusters will be randomized to cross over to enhanced mHealth hearing screening and specialty telemedicine referral in a stepwise manner until all clusters receive both the interventions. The enhanced mHealth screening component will be rolled out in Years 2 or 3 (control period in Years 1 and 2) depending on sequence randomization. Specialty telemedicine referral will be rolled out in Years 3 and 4 (control period in Years 2 and 3) depending on sequence randomization.

Standard School Screening: All counties in Sequence 1 will receive standard hearing screening in the control period, Year 1 Standard Referral: All counties in Sequence 1 will receive standard referral in control period, Years 1 and 2. Enhanced mHealth screening component: Counties randomized to Sequence 1 will receive the enhanced mHealth screening in Years 2, 3, and 4. Specialty telemedicine referral component: Counties randomized to Sequence 1 will receive the specialty telemedicine referral component in addition to the enhanced mHealth screening in Years 3 and 4.

Standard Hearing Screening: All counties in Sequence 2 will receive standard hearing screening in the control period, Years 1 and 2 Standard Referral: All counties in Sequence 2 will receive standard referral in control period, Years 1, 2 and 3. Enhanced mHealth screening component: Counties randomized to Sequence 2 will receive the enhanced mHealth screening in Years 3 and 4. Specialty telemedicine referral component: Counties randomized to Sequence 2 will receive the specialty telemedicine referral component in addition to the enhanced mHealth screening in Year 4.

Counties in the control condition will use standard hearing screening and standard referral by school district. Standard referral is typically a letter home from the school to parents/caregivers of children who refer screening.

The enhanced screening protocol will consist of an mHealth-based hearing screen combined with tympanometry.

The specialty telemedicine referral will include a lay-friendly smartphone or tablet that connects to tools necessary for an ear and hearing evaluation. If a child requires referral from hearing screening, a school nurse/teacher will complete the established protocol for the specialty telemedicine referral and send details asynchronously to an audiologist for consultation.

This outcome will be measured at the end of each annual screening period for each school, for 4 years.

This outcome will be measured each school year, for 2 years or 3 years depending on sequence randomization.

Proportion of children who receive follow-up will be measured by the occurrence of an ear/hearing encounter, up to 60 days from the date of screening.

Inclusion Criteria: Enrolled in school in one of the 14 participating counties Initial entry into elementary school Eligible regardless of age, gender, race, or ethnicity Exclusion Criteria: • N/A

This study focuses on population outcomes. School and health data will remain with local education and healthcare entities, and the study team will receive deidentified information. Data sharing will be considered upon request pending appropriate local approval.